1999 Corvette has no Serial #

[WillRyan]

Okay I plugged up HPT and it read the PCM just fine. The only problem is when I go to License the vehicle so I can do some tuning, it does not display the option for a single vehicle license for 2 credits. It only shows the:

Don't License - 0 Credits


Year/Model - 6 Credits
Unlimited - 30 Credits

From doing a little searching I found this.
http://www.hptuners.com/forum/showthread.php?t=8672

I did have the PCM reflashed by the dealer. So I think I'm having the same problem as this guy, except it's still the original PCM just reflashed with no true Serial #.



What can I do to fix this? I don't want to waste 6 credits when the Corvette only needs 2.

[Bill@HPTuners]

Have someone who already has the year/model license flash you with a file that HAS a valid serial number then reread OR tech 2 should be able to fix the issue as well.

[WillRyan]

Who is Tech 2?

[Bill@HPTuners]

I don't know who is tech 2 but a tech 2 is a gm tool http://auto-diagnostics.info/gm_tech2

[WillRyan]

Sorry meant what*.

So I could go to my Chevy dealership and ask them to look at it or what?

[Bill@HPTuners]

Yeah they might be able to fix it but most will charge you upwards of $100 to do so therefore it might not be worth the effort & might just be cheaper to just license the year/model license & full flash in a file that has a valid vcm id number.

[WillRyan]

Okay.
Well say I chose to use my 6 credits and get the year/model. Will I beable to tune my car then?

[Bill@HPTuners]

Yes, as stated your best bet would then be to find a stock file with the same os as yours and do a write entire with that file to your pcm so that your pcm then has a valid vcm id number.

[WillRyan]

Sorry I'm new to all this so I have some more questions. lol

What is the "os"?
Also you say I can tune my car when I purchase the year/model license w/o a valid vcm number. So if I can tune my car w/o the id # do I really need it?


I want to say thanks for all the quick help so far. Its great!

[Bill@HPTuners]

operating system

yes you can tune it without a vcm id number, however if you try and apply a custom operating system and go to write it the software will ask you to license the unlimited license(30 credits) which I doubt you want to do. So to ease future issues its best to have the pcm flashed with a file that has a valid vcm id number.

-Bill

[WillRyan]

Okay I posted a new thread in the Generation 3 Engine tuning section asking for a factory os for my car. Hope that's what ur saying to do.

All I plan to do right now before I get a true Dyno tune is to get rid of the Torque Management, adjust the fans, shift points, and maybe some timing adjustments. Will that require a custom operating system? Im wanting to go ahead and adjust those few things but am willing to wait if I need a valid id #.

[Bill@HPTuners]

Nothing you do will REQUIRE a custom operating system, however there are many advantages to our custom operating systems over teh stocker.